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    yamaha 2 strokes

    asked this question about a year ago and never got a reply. figured i'd try again. does anyone happen to know the difference between the 2004 60 hp and 70 hp 2 stroke? same exact powerhead,weight,lower unit etc. except the 70 rpm range is 5000-6000 where the 60 is 45-5500. could it be the cdi...
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    a more efficient prop? or just be happy?

    boat-16' alum. grumman(semi-v).approx.600lbs.max hp 50 motor-yamaha 2s 60(2004).228lbs. 2.33 gear. prop-aluminum oem 13x19 wot-55-5600 rpms, 34-36mph(gps) av plate is @ 1" above keel(can't go any higher or it vents) The boat performs ok, but i would like a few more mph's. i was curious about a...
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    hwsiii

    hwsiii, could you post the chart or equation that determines theoretical speed by using gear ratio,pitch,slip etc.? i can't seem to find it in the search function. thanks
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    35 johnson dies when accelerating. help

    me and my buddy went to lake last nite and his motor started well and idled perfect but would die when going to full throttle. i thought it was the vent on the gas cap, it was open. we disconnected the fuel hose and squeezed the bubble and he was getting gas to motor. the choke was not stuck and...
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    johnson specs help

    where can i find engine weight and lower unit ratio for a 1994- 1996? ( i think) 60 hp johnson 2 stroke long shaft?
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    tires

    i saw the size trailer tire i need (155 80 r13) at wal-mart for $35. they are passenger car tires where i have st tires. i'm tempted to try them for that low cost. has anyone tried wal-mart car tires on their trailer?
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    lower unit drain plug

    i have a 2004 yamaha 60 and can't loosen the plug to drain lower unit. i'm a pretty strong guy and it will not budge. it is a slotted screw for a standard tip screw driver. does anyone have any tips, before i wallow out the slot?
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    sadly they stopped making these

    looking for a 2000 or newer 60hp 2 stroke mercury long shaft(not bigfoot). if anyone knows where i can find one shoot me a pm. thanks
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    60 mercury

    i am wanting a 2000 or newer 60 hp mercury 2 stroke(not bigfoot). where would be a good place to look or does anyone have one? they stopped producing them in 2003 right? i've been checking locally with no luck.
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    hustler questions

    i was thinking of buying a spare prop and saw that the hustler is on sale here on iboats. i've heard they outperform standard aluminum. are they cupped at all? progrssive pitch? was wondering because i need to know if i should drop pitch if i order it. i'm currently running a yamaha 60, 19 pitch...
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    hp to gear ratio

    i have read the posts and posted the posts but i need somebody to explain in detail the relationship between horsepower and gear ratio. for example, why does a merc. 60 and a mercury 60 big foot (2 stroke, of course) not produce the same results? why does a yamaha 60 not post the speed of a...
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    prop questions

    i have a yamaha 60(2.33 gear) with an aluminum yamaha 19 pitch on an aluminum bass boat. i have raised engine and the prop vents a little. wot rpms @5500-5600. i tried a stiletto ss 21 pitch and it did not vent but rpms at wot were @4500, i guess because of cupping on th prop. should i have went...
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    tach check

    i suspect that my tach is not reading accurately. it is an aftermarket teleflex. is there any way to check to be sure.
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    stilleto on my yamaha 60

    i have posted earlier about my 60 yamaha with a 2.33-1 gear ratio on a stick steer bass boat. i am overpowered a little (rated for a 50) and the large gearcase really isn't suited for my boat but it is what it is. i have a 19 pitch yamaha prop now and av plate is raised one bolt hole on...
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    raising the motor?

    i know this question has probably been asked but what do you normally gain from raising your outboard? i have mine raised one hole. it seems to spray a lot of water near the transom but no water in the boat. if i raise it more will i see more top end, hole shot? it handles good now with no...
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    yamaha 60 or 70

    i recently bought a 2004 yamaha 60 2 stroke. the 60 and 70 are the same motor except the 60 rpm is 4500-5500 and the 70 is 5000-6000. with the prop i have my rpm is @5700. what is the difference in the two motors? is there really a 10 h.p. gain in the 70 or does it just have a higher rpm range...
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    mercury power

    simple question, why do, for the most part, mercury motors have more power than a comparable engine? in my experience mercury has always outperformed johnson, yamaha, etc.
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    mercury question

    could someone explain the difference between the 60 and 60 bigfoot mercury(2 stroke) other than the bigfoot has a higher gear ratio. performance wise are the two capable of the same speeds with the right props or is the bigfoot destined to be a workhorse?
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    johnson 1998

    i have a 1998 johnson 2 stroke 40 h.p. that i will be trying to sell soon. it has a 20" shaft and is in ex. cond. i also have the controls. does anyone know what this motor sells for, nada is a starting point but sometimes their prices and real world private sells are different. if location is a...
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    yamaha prop

    i upgraded to a yamaha 60 2 stroke and took it for a test run today. i have a 1648 grumman semi-v hull. weight? maybe 500-600 lbs. not sure just a guess. the motor has rpm range of 5000-5500 and a 19 pitch prop. wot rpm's hung around 5500-5800 and top speed was 38-39. hole shot is tremendous...
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